Along Australia's inhabited coastlines, where biological richness runs deepest and human pressures bear hardest, the ocean's most vulnerable ecosystems remain largely unguarded. More than 270 marine scientists have written to the federal government during a once-in-a-decade review of the nation's marine parks, arguing that stringent protections have been concentrated in remote offshore territories while the biodiverse mainland regions — home to species found nowhere else on Earth — are left exposed to fishing, industrial extraction, and a rapidly shifting climate. The question before Australia
Scientists urge Australia to protect mainland waters as marine parks review begins
If we don't protect them here, they're lost forever.
Mark
Why does it matter where the protected zones are located? Isn't protection protection, whether it's near the coast or far offshore?
Mimi
Because the threats are concentrated near the coast. That's where fishing fleets operate, where climate change is hitting hardest, where cities expand into the water. Protecting a remote offshore area doesn't help a species being hunted in shallow coastal waters.
Mark
But the minister says they're on track to hit the 30 percent target by 2030. Doesn't that address the concern?
Mimi
Not if that 30 percent is still concentrated in places nobody fishes. You could protect 30 percent of the ocean and still leave the most biodiverse, most pressured regions almost entirely exposed. The scientists want 30 percent of every region—that's the difference.
Mark
What makes the temperate east region so special that it needs protection?
Mimi
It has six to seven hundred fish species in waters where you'd expect maybe two hundred based on latitude alone. It's a mixing zone where tropical and temperate species overlap, and it's warming rapidly. Species are moving south, fishing pressure is intense, and right now almost none of it is protected.
Mark
The minister mentioned sustainable use. Can't fishing and protection coexist?
Mimi
They can, but not in the same zone. The highly protected areas—the no-take zones—are where breeding populations rebuild. The evidence is clear: 80 percent of the coral trout caught in open fishing zones on the Great Barrier Reef were born in protected areas. You need both.
Mark
Why frame this as a global precedent? What does Australia's choice have to do with other countries?
Mimi
Because Australia has enormous ocean territory and exceptional biodiversity. If Australia sets a weak standard, every other nation with ocean territory watches and thinks, 'Well, if they're not protecting their unique species, why should we be strict?' Leadership matters in conservation.
El Pulso
- In some mainland marine regions, as little as 1 to 7 percent of the ocean holds the highest level of protection, leaving vast stretches of irreplaceable coastal biodiversity open to fishing fleets and industrial activity.
- The temperate east coast — an exceptional convergence of tropical and temperate species, underwater canyons, and a powerful ocean current — is undergoing rapid climate-driven transformation with almost no protective buffer in place.
- Over 270 scientists from 84 institutions have formally petitioned the environment minister, demanding at least 30 percent high protection across every marine bioregion and a ban on trawling, long-lining, and mining throughout all marine parks.
- The government points to planned expansions around remote island territories as progress toward its 2030 target, but scientists warn this approach repeats the same mistake of protecting places no one threatens rather than places that matter most.
- Australia's once-in-a-decade marine parks review is now underway, and researchers caution that a weak outcome will not only fail the nation's unique species — it will lower the bar for ocean conservation worldwide.
Along Australia's inhabited coastlines, where biological richness runs deepest and human pressures bear hardest, the ocean's most vulnerable ecosystems remain largely unguarded. More than 270 marine scientists have written to the federal government during a once-in-a-decade review of the nation's marine parks, arguing that stringent protections have been concentrated in remote offshore territories while the biodiverse mainland regions — home to species found nowhere else on Earth — are left exposed to fishing, industrial extraction, and a rapidly shifting climate. The question before Australia is not merely one of national stewardship, but of global precedent: how a wealthy, ocean-rich nation chooses to act at this moment will quietly grant permission — or deny it — to every other country watching.
Australia's marine parks are protecting the wrong places. That is the central argument of more than 270 marine scientists who have written to Environment Minister Murray Watt as the government begins its once-in-a-decade review of the national marine parks system. Drawn from 84 institutions, the researchers warn that the most stringent protections — no-take zones where fishing and extraction are banned — are concentrated in remote offshore territories, while the biodiverse coastal regions where most Australians live remain largely exposed.
The stakes are considerable. Australia's oceans contain at least 33,000 marine species, six UNESCO World Heritage areas, and ecosystems stretching from tropical reefs to Antarctic waters. Many of these species exist nowhere else. Yet in some mainland regions, only 1 to 7 percent of the ocean receives the highest level of protection. The temperate east coast — stretching from the southern Great Barrier Reef to New South Wales, and home to six or seven hundred fish species — is described by researchers as extraordinarily biodiverse, rapidly changing under climate pressure, and almost entirely unprotected.
The scientists are calling for at least 30 percent of every marine bioregion to be highly protected, with industrial trawling, long-lining, and mining banned across all marine parks. Jessica Meeuwig of the University of Western Australia put the logic plainly: species found only in Australian waters cannot be saved by anyone else. Carissa Klein of the University of Queensland added that the goal is a representative network — not protection of places no one visits, but of the living diversity that actually needs defending. Researchers also noted that conservation and fishing are not inherently opposed: on the Great Barrier Reef, 80 percent of coral trout caught in open zones were born inside protected areas.
The minister described the government as well on its way to 30 percent protection by 2030, pointing to expansions around Lord Howe and Norfolk islands. Scientists, however, see the review as a far more consequential moment. Meeuwig warned that Australia's choices will set the tone internationally — that when Australia leads well, it holds the global bar high, and when it falls short, it quietly grants permission to others to do the same.
Australia's ocean is being protected in all the wrong places. That's the argument more than 270 marine scientists are making as the government begins a once-in-a-decade review of its marine parks system. The researchers, drawn from 84 institutions across the country, have written directly to Environment Minister Murray Watt with a stark message: the nation is concentrating its most stringent protections in remote waters far from shore, leaving the biodiverse coastal regions where most Australians live largely exposed to fishing, industrial extraction, and climate pressures.
The waters surrounding Australia hold staggering biological wealth. There are at least 33,000 marine species, six UNESCO World Heritage areas, and ecosystems ranging from tropical coral reefs to Antarctic ice. Many of these creatures exist nowhere else on Earth. Yet the current system of highly protected "no take zones"—areas where fishing and extraction are banned—covers only about a quarter of Australian waters overall, and within that quarter, the coverage is heavily skewed toward the isolated offshore territories. In some mainland regions, only 1 to 7 percent of the ocean receives this highest level of protection. The rest, as one scientist put it, is "open slather."
Consider the temperate east region, which stretches from the southern edge of the Great Barrier Reef down to Bermagui on New South Wales's south coast. This zone contains six to seven hundred species of fish—far more than its latitude should support—a mix of tropical and temperate species, underwater canyons and seamounts, and the East Australian Current. It is also a hotspot for climate-driven change, with temperate fish species migrating southward and facing mounting pressure from urbanization, industry, and fishing fleets. Yet it remains almost entirely unprotected. David Booth, a marine ecologist at the University of Technology Sydney, describes it as "incredibly biodiverse" and "an area of rapid change, with very little protection at the moment."
Jessica Meeuwig, director of the Marine Futures Lab at the University of Western Australia and a lead author of the scientists' statement, frames the stakes plainly: many Australian marine species are found nowhere else on the planet. "If we don't protect them here, it's not like we can expect somebody else to do the job, they're lost for ever." The scientists are calling for at least 30 percent of every marine bioregion to be highly protected, with industrial trawling, long-lining, and mining banned across all marine parks. They are also insisting that no existing protections be rolled back.
Carissa Klein, director of the Centre for Biodiversity and Conservation Science at the University of Queensland, points out that the current system protects "places that no one goes" rather than the living diversity that actually needs defending. "Every bioregion is unique and distinct, and has different animals and plants," she said. "We want them to get to 30% of every one. We want a representative network of protected areas all around Australia." The scientists argue this approach would benefit not only marine life but also fishers and tourism operators. On the Great Barrier Reef, for instance, 80 percent of the coral trout caught in open fishing zones were born in highly protected areas—a reminder that conservation and sustainable use are not opposing forces.
Watt responded that the government is "well on the way" to meeting its commitment to highly protect 30 percent of Australia's ocean by 2030, citing planned expansions around Lord Howe and Norfolk islands. The marine parks review, he said, would provide "further opportunities to better protect key ocean habitats" while allowing for "sustainable use and conservation." But the scientists see this moment as far more consequential than the minister's language suggests. Meeuwig called the review "a tremendous opportunity" and warned that Australia's decisions will reverberate globally. "When Australia leads, it keeps the bar high. When we set the bar low, it gives permission to everybody else to do a bad job. If Australia flounders at this opportunity, it will have ramifications across other places." The review is now underway, and the outcome will determine whether the nation's most vulnerable marine ecosystems finally receive the protection their uniqueness demands.
Citas Notables
If we don't protect them here, it's not like we can expect somebody else to do the job, they're lost for ever.— Jessica Meeuwig, director of the Marine Futures Lab at the University of Western Australia
When Australia leads, it keeps the bar high. When we set the bar low, it gives permission to everybody else to do a bad job.— Jessica Meeuwig
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